Explore Westonci.ca, the leading Q&A site where experts provide accurate and helpful answers to all your questions. Experience the convenience of finding accurate answers to your questions from knowledgeable experts on our platform. Get precise and detailed answers to your questions from a knowledgeable community of experts on our Q&A platform.

t is directly proportional to the square root of z and t = 35 when z = 100. Find t when z = 625.

Sagot :

Answer:

t = 87.5

Step-by-step explanation:

Let's change our proportion sign (∝) into an (=) to make it easier.

t = k * [tex]\sqrt{z}[/tex]  ----------------- (Where K is our constant)

35 = k * [tex]\sqrt{100}[/tex]  ------------------ (Now simplify the square root)

35 = k * 10

35 = 10k

We now want to divide both sides by 10 to isolate K

[tex]\frac{35}{10}[/tex] = [tex]\frac{k}{10}[/tex]

3.5 = K

Now we have our constant, lets insert it into our next line of working out.

t = [tex]\sqrt{625\\}[/tex] * 3.5 (Now simplify the square root)

t = 25 * 3.5

t = 87.5